A clearance is certified permission to use aspects of a project contributed by others. There are several types of clearances needed to air a project like a movie, including script clearances, content clearances, music clearances, location clearances, and actor/contributor clearances. Script clearances are required if using an original script to ensure characters do not resemble real people. Content clearances are needed for branded items appearing in the production. Music clearances cover any music or sounds that others own copyright for. Actor clearances require contracts with any actors featured consenting to the use of their footage in the production.